Add joinable legacy code

exp_legacy/module/control.lua

@@ -4,6 +4,13 @@
 -- all files which are loaded (including the config files) are present in ./config/file_loader.lua
 -- this file is the landing point for all scenarios please DO NOT edit directly, further comments are to aid development
 
+local _xpcall = xpcall
+xpcall = function (func, error_handler, ...)
+    local rtn = { _xpcall(func, error_handler, ...) }
+    if not rtn[1] then error(rtn[2]) end
+    return table.unpack(rtn)
+end
+
 log('[START] -----| Explosive Gaming Scenario Loader |-----')
 log('[INFO] Setting up lua environment')